FileVideoFormatter.php

<?php

namespace Drupal\file\Plugin\Field\FieldFormatter;

use Drupal\Core\Form\FormStateInterface;

/**
 * Plugin implementation of the 'file_video' formatter.
 *
 * @FieldFormatter(
 *   id = "file_video",
 *   label = @Translation("Video"),
 *   description = @Translation("Display the file using an HTML5 video tag."),
 *   field_types = {
 *     "file"
 *   }
 * )
 */
class FileVideoFormatter extends FileMediaFormatterBase {
    
    /**
     * {@inheritdoc}
     */
    public static function getMediaType() {
        return 'video';
    }
    
    /**
     * {@inheritdoc}
     */
    public static function defaultSettings() {
        return [
            'muted' => FALSE,
            'width' => 640,
            'height' => 480,
        ] + parent::defaultSettings();
    }
    
    /**
     * {@inheritdoc}
     */
    public function settingsForm(array $form, FormStateInterface $form_state) {
        return parent::settingsForm($form, $form_state) + [
            'muted' => [
                '#title' => $this->t('Muted'),
                '#type' => 'checkbox',
                '#default_value' => $this->getSetting('muted'),
            ],
            'width' => [
                '#type' => 'number',
                '#title' => $this->t('Width'),
                '#default_value' => $this->getSetting('width'),
                '#size' => 5,
                '#maxlength' => 5,
                '#field_suffix' => $this->t('pixels'),
                '#min' => 0,
                '#required' => TRUE,
            ],
            'height' => [
                '#type' => 'number',
                '#title' => $this->t('Height'),
                '#default_value' => $this->getSetting('height'),
                '#size' => 5,
                '#maxlength' => 5,
                '#field_suffix' => $this->t('pixels'),
                '#min' => 0,
                '#required' => TRUE,
            ],
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public function settingsSummary() {
        $summary = parent::settingsSummary();
        $summary[] = $this->t('Muted: %muted', [
            '%muted' => $this->getSetting('muted') ? $this->t('yes') : $this->t('no'),
        ]);
        $summary[] = $this->t('Size: %width x %height pixels', [
            '%width' => $this->getSetting('width'),
            '%height' => $this->getSetting('height'),
        ]);
        return $summary;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function prepareAttributes(array $additional_attributes = []) {
        return parent::prepareAttributes([
            'muted',
        ])->setAttribute('width', $this->getSetting('width'))
            ->setAttribute('height', $this->getSetting('height'));
    }

}